''Roldana'' also known as

groundsel Groundsel is a common name for several plants and may refer to: *Members of the genus ''Senecio'' **Creeping groundsel, ''Senecio angulatus'' **Common groundsel, ''Senecio vulgaris'' **Welsh groundsel, ''Senecio cambrensis'' **York radiate groundse ...

is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of large herbs or sub

shrub A shrub (often also called a bush) is a small-to-medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees ...

s from the tribe groundsel tribe within the sunflower family.Tropicos, ''Roldana'' La Llave
/ref> Most if not all of its members used to be members of a related genus, ''

Senecio ''Senecio'' is a genus of flowering plants in the daisy family (Asteraceae) that includes ragworts and groundsels. Variously circumscribed taxonomically, the genus ''Senecio'' is one of the largest genera of flowering plants. Description Morp ...

''. The species which are native to

Southwest United States The Southwestern United States, also known as the American Southwest or simply the Southwest, is a geographic and cultural region of the United States that generally includes Arizona, New Mexico, and adjacent portions of California, Colorado, Ne ...

Mexico Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema ...

and

Central America Central America ( es, América Central or ) is a subregion of the Americas. Its boundaries are defined as bordering the United States to the north, Colombia to the south, the Caribbean Sea to the east, and the Pacific Ocean to the west. ...

and naturalized elsewhere. ; Species ; formerly included several species now regarded as better suited to other genera: ''

Trixis ''Trixis'' is a genus of shrubs in the family Asteraceae, native to North and South America including the West Indies. Members of the genus are commonly known as threefolds due to the outer lip of the corolla. The generic name is derived from ...

References

External links

Senecioneae Asteraceae genera Flora of North America {{Senecioneae-stub